defstruct is deprecated. You should use defrecord or deftype instead. You
can define operations on these via defprotocol.
And you can even type hint the members:
(defprotocol IScale
(scale [this ^double amount]))
(deftype Point [^double x ^double y]
IScale
(scale [this amount]
(Point. (* x amount) (* y amount))))
(scale (Point. 10 1))
Timothy
On Wed, Jul 2, 2014 at 9:41 AM, SharpCoder <cannonicalco...@gmail.com>
wrote:
> As an exercise, I'm trying to port a library that I originally wrote in
> C#. It's actually a Neural Network, so my imperative design was a pretty
> straightforward tree-like structure of nodes that could manipulate state.
> During my port to Clojure, I've been writing functions that take multiple
> arrays (typically "graph of outputs" and "graph of weights"). Then I
> remembered about structs, so I refactored my code to deal with a collection
> of structs "node". A node contains a vector of weights and an output. In
> this way, I am only passing around a single collection that can represent
> my whole neural network.
>
> Now I'm running into the fact that I kind of need to update the structure.
> So what I've implemented is essentially, each time you calculate the
> network output - my code iterates over the list of structs and creates new
> ones with the "updated" values. Performance is something that people don't
> seem to talk about much with Clojure, but I'm kind of thinking my approach
> with structs might not be the best one.
>
> My question is, am I approaching this incorrectly? I've seen a lot of
> resources that deal with the syntax of Clojure but haven't found a good
> guide on actual application design. My usage of structures seems natural to
> me, but that makes me question it even more!
>
> For anyone interested, here is my code: https://www.refheap.com/87775
> I'm going to open source the library after many many iterations to
> beautify it. I'm sure it's a bit too haphazard to make sense to right now...
>
> Thank you for your time!
> -SharpCoder
>
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zero–they had no way to indicate successful termination of their C
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